Gerald,
Our users will not be connected to the local network which the KBOX is installed, so UNC paths will not work.
Our software distribution source is currently a linux cloud based web server with a simple http file listing script where we can point users to download large files like office, and vmware workstation.
Obviously for simplicity sake we would like to use the KBOX to have them select from an available list of hardware and have it download the installations files from our existing web server.
The reason being, we're a consulting company and as a result our employees are spread throughout the country. Having a high speed distribution source makes the most sense for us as we have very limited upstream bandwidth from our office.

Can we specify a file location as follows... http://distro.company.com/VMWare_Workstation/VMware-workstation-full-7.1.0-261024.exe

In the installation instructions you could put a link to it:
<A HREF=http://distro.company.com/VMWare_Workstation/VMware-workstation-full-7.1.0-261024.exe>http://distro.company.com/VMWare_Workstation/VMware-workstation-full-7.1.0-261024.exe</A>